FIGURE 1.5. Heptachlor, lindane, and aldrin in liver of juvenile salmon. Values are mean concentrations ± SE. The p value for the statistical comparison between Hylebos fish and reference site fish is shown on the graph. n = number of analyses. ppb = parts per billion. Reference sites for chum salmon include Puyallup Tribal Hatchery, and Skokomish Estuary. Reference sites for chinook salmon include Puyallup State Hatchery, Nisqually Hatchery, and Nisqually Estuary. BDL= below detection limits. Some or all of the samples in this group had concentrations that were below detection limits. Detection limits vary depending on the sample size; detection limits for individual samples are given in the Case Narratives. Samples with values below detection limits were treated as if the concentration was 50% of the detection limit.

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